Best Performance Exhaust for 496 on Heat
02-18-2011, 08:58 AM
#11
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Now that tax season is over, I am finally embarking on my project. I just asked John at Unlimited Marine to order the Dana exhaust for me along with the PCM reprogram. I am going to stick with the current prop until I see what RPMs it pulls. I am hoping for 4 mph. Wish me luck!
02-18-2011, 10:32 AM
#12
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CumberlandHeat, do some research! I paid $4,600 for CMI Sporttube headers for my HO and saw ZERO increase in performance. The same has happened to others. Just a heads up. Save your money for something that will buy you real HP. JMO (btw my hull is very responsive to power ups)
02-19-2011, 10:32 PM
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Now that tax season is over, I am finally embarking on my project. I just asked John at Unlimited Marine to order the Dana exhaust for me along with the PCM reprogram. I am going to stick with the current prop until I see what RPMs it pulls. I am hoping for 4 mph. Wish me luck!
03-02-2011, 12:38 AM
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CumberlandHeat, do some research! I paid $4,600 for CMI Sporttube headers for my HO and saw ZERO increase in performance. The same has happened to others. Just a heads up. Save your money for something that will buy you real HP. JMO (btw my hull is very responsive to power ups)
06-01-2011, 01:01 PM
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I got the boat back from Unlimited Marine in Russell Springs, KY a few weeks ago. John and Eddie did a perfect job. I went with the Dana set, powdercoated blue with polished risers. The only hiccup was a delay in receiving the risers from Dana. FINALLY the weather cooperated last week for a real test. I managed to get 3-4 mph out of just the headers/fuel regulator alone running a 26 pitch prop with 5050 rpm at WOT. I was tickled pink. The boat now will run low 70's easily when it used to take perfect conditions to hit 70-71. I am not going to go with the PCM- I'm happy for now. Maybe a Raylar kit down the road but would need steerin first. I highly recommend the Dana kit!
06-01-2011, 03:34 PM
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06-01-2011, 03:35 PM
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06-01-2011, 03:47 PM
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Cumberland,
You have a beautiful Heat. I think it's the prettiest Heat I've ever seen. I drove it at the Nordic Regatta before you bought it. I like the new smoked door and hatch, and power bolsters.
Nice upgrade on the motor.
Are you running the Thunder Run? I'm thinking about it.............
Regards,
Steve
You have a beautiful Heat. I think it's the prettiest Heat I've ever seen. I drove it at the Nordic Regatta before you bought it. I like the new smoked door and hatch, and power bolsters.
Nice upgrade on the motor.
Are you running the Thunder Run? I'm thinking about it.............
Regards,
Steve
Last edited by Steve Zuckerman; 06-01-2011 at 04:34 PM.
06-01-2011, 07:51 PM
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Thanks, Steve! I appreciate the compliment. Ironically, the Thunder Run starts this year from Grider Hill, which is where I dock my houseboat. Unfortunately, I will be out of town on business that weekend. How does your boat run with that 575? I'd bet its wicked fast!
